US10718235B2 - Turbine ring assembly comprising a plurality of ring sectors made of ceramic matrix composite material - Google Patents
Turbine ring assembly comprising a plurality of ring sectors made of ceramic matrix composite material Download PDFInfo
- Publication number
- US10718235B2 US10718235B2 US15/560,754 US201615560754A US10718235B2 US 10718235 B2 US10718235 B2 US 10718235B2 US 201615560754 A US201615560754 A US 201615560754A US 10718235 B2 US10718235 B2 US 10718235B2
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- United States
- Prior art keywords
- holder
- ring
- turbine
- wall
- ring assembly
- Prior art date
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- 239000011153 ceramic matrix composite Substances 0.000 title claims abstract description 22
- 239000000463 material Substances 0.000 title claims abstract description 16
- 239000007769 metal material Substances 0.000 claims abstract description 9
- 239000007789 gas Substances 0.000 description 10
- 238000001816 cooling Methods 0.000 description 8
- 239000002184 metal Substances 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 239000000835 fiber Substances 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 238000009941 weaving Methods 0.000 description 4
- 238000000429 assembly Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910000601 superalloy Inorganic materials 0.000 description 2
- YPIMMVOHCVOXKT-UHFFFAOYSA-N Multisatin Natural products O=C1C(C)C2C=CC(=O)C2(C)C(OC(=O)C(C)=CC)C2C(=C)C(=O)OC21 YPIMMVOHCVOXKT-UHFFFAOYSA-N 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
- F01D25/246—Fastening of diaphragms or stator-rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
- F01D11/12—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator using a rubstrip, e.g. erodible. deformable or resiliently-biased part
- F01D11/122—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator using a rubstrip, e.g. erodible. deformable or resiliently-biased part with erodable or abradable material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/005—Selecting particular materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/30—Application in turbines
- F05D2220/32—Application in turbines in gas turbines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/10—Stators
- F05D2240/11—Shroud seal segments
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/10—Stators
- F05D2240/14—Casings or housings protecting or supporting assemblies within
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/60—Properties or characteristics given to material by treatment or manufacturing
- F05D2300/603—Composites; e.g. fibre-reinforced
- F05D2300/6033—Ceramic matrix composites [CMC]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
-
- Y02T50/672—
Definitions
- the invention relates to a turbine ring assembly comprising a plurality of ring sectors made of ceramic matrix composite material, together with a ring support structure.
- CMC materials present good mechanical properties making them suitable for constituting structural elements, and advantageously they conserve these properties at high temperatures.
- the use of CMC materials has advantageously made it possible to reduce the cooling stream that needs to be used in operation, and thus to increase the performance of turbine engines.
- using CMC materials serves advantageously to reduce the weight of turbine engines and to reduce the effect of expansion while hot that is encountered with metal parts.
- the invention provides a turbine ring assembly comprising a ring support structure and a plurality of ring sectors made of ceramic matrix composite material, each ring sector having a portion forming an annular base with an inside face defining the inside face of the turbine ring, and an outside face from which there extends a wall defining an internal housing in which a holder member made of metal material is present, the holder member being connected to the ring support structure and comprising a body from which elastically deformable holder elements extend inside the internal housing on either side of the body, the holder elements bearing against the wall.
- the holder member serving to hold the ring sector to the ring support structure is present in an internal housing of the ring sector and is consequently protected from the hot stream by the CMC ring sector, which presents low thermal conductivity and thus constitutes a thermal barrier for the holder member.
- the CMC ring sector thus serves to obtain thermal decoupling between the inside face of the turbine ring and the holder member.
- the configuration of the invention thus makes it possible to reduce the quantity of gas needed for cooling the portions that hold the ring sector to the ring support structure, and consequently leads to an increase in the performance of the engine. Furthermore, because of the thermal expansion of the metal material of the holder member, it exerts pressure on the ring sector, thus serving to hold it in position while in operation.
- the holder elements may bear against the wall over a portion only of their length.
- the length of a holder element is measured along the longitudinal axis of the internal housing.
- Such a characteristic advantageously makes it possible for the holder element to bear locally against the wall and thus hold the ring sector in position, while imparting little stress thereto.
- Such a configuration allows the holder element to slide over the wall in the event of differential expansion, and consequently to compensate for expansion differences between the holder member and the ring sector.
- the holder elements may bear against the wall over a length that is shorter than or equal to three-quarters of their own length, preferably less than or equal to half their own length, more preferably less than or equal to one-fourth of their own length.
- the holder elements may bear against the wall via their distal portions.
- the holder elements may bear against the wall solely via their distal portions.
- the distal portion of a holder element corresponds to the portion of said holder element lying between its distal end and the zone situated halfway along the holder element, the holder element extending between a proximal end situated beside the body of the holder element and a distal end situated remote from said body.
- the holder elements may bear against the wall at first and second ends of the internal housing.
- the wall may present at least one recess through which there passes at least one fastener element enabling the body of the holder member to be fastened to the ring support structure.
- the recess serves to connect the holder member to the ring support structure.
- the recess may also constitute a ventilation orifice enabling cooling air to be brought to the holder member and to the ring sector.
- the length of the holder element is longer than or equal to half the length of the internal housing, e.g. longer than or equal to three-fourths of the length of the internal housing.
- the length of the holder member is measured along the longitudinal axis of the internal housing.
- the length of some or all of the holder elements is greater than the length of the body of the holder member, e.g. longer than or equal to twice the length of the body of the holder member.
- Holder elements of relatively long length advantageously present increased springiness, thus making it possible to obtain particularly flexible bearing of the holder elements against the ring sector and thus compensate better for differential expansion between the holder member and the ring sector, without affecting the holding in position of the ring sector.
- the length of the body of the holder member is measured along the longitudinal axis of the internal housing.
- the length of some or all of the holder elements is shorter than the length of the body of the holder member.
- Some or all of the holder elements may present length that is longer than their width, preferably longer than or equal to three times their width.
- the width of a holder element corresponds to its greatest transverse dimension.
- the internal housing may extend along a longitudinal axis, and the holder elements may bear against the wall via holder zones that are symmetrical relative to the longitudinal axis.
- the holder elements may be in the form of tabs.
- the holder elements may be in the form of flared portions. The flared portions extend getting wider over all or part of their length on going away from the body of the holder member towards one of the ends of the internal housing.
- the present invention also provides a turbine engine including a turbine ring assembly as defined above.
- the turbine ring assembly may form part of a turbine nozzle in the turbine engine.
- the turbine ring assembly may form part of an aeroengine gas turbine, or in a variant it may form part of an industrial turbine.
- FIGS. 1 and 2 show a holder member and a ring sector relating to a first embodiment of the invention
- FIG. 3 is a fragmentary diagrammatic view in section on the tangential direction of the assembly shown diagrammatically in FIG. 2 ;
- FIG. 4 is a fragmentary diagrammatic view in section perpendicularly to the tangential direction showing the FIG. 2 ring sector once mounted on the ring support structure;
- FIG. 5 shows a holder member together with a ring sector relating to a second embodiment of the invention.
- FIG. 6 is a section view in the tangential direction of the assembly shown diagrammatically in FIG. 5 .
- FIG. 1 shows a turbine ring sector 1 together with a holder member 10 in a first embodiment of the invention.
- the holder member 10 is shown separately from the turbine ring sector 1 .
- FIG. 2 shows the operating configuration of the FIG. 1 assembly in which the holder member 10 serves to hold the ring sector 1 to the ring support structure, the holder member 10 being housed in the ring sector 1 .
- a plurality of ring sectors 1 are mounted on a casing 14 (see FIG. 3 ) that is made of metal material and that constitutes a ring support structure.
- the ring sectors 1 may each be provided with one or more sealing strips (not shown). Once the set of ring sectors 1 has been mounted on the ring support structure, these sealing strips serve to reduce or even eliminate leaks of air between the ring sectors 1 .
- the ring sectors 1 are single pieces made of CMC. Using a CMC material for making ring sectors 1 is advantageous in order to reduce requirements for ring ventilation.
- the ring sectors 1 have an annular base 2 .
- the inside face 3 relative to the radial direction R of the annular base 2 is coated in a layer of abradable material (not shown in FIGS. 1 to 3 ) and it defines the passage in which the gas stream flows through the turbine.
- the radial direction R corresponds to the direction along a radius of the turbine ring (a straight line connecting the center of the turbine ring to its periphery).
- the annular base 2 also presents a face 3 a that is outside relative to the radial direction R.
- Each ring sector 1 presents a wall 5 extending from the outside face 3 a of the annular base 2 .
- the wall 5 defines an internal housing 6 extending along a longitudinal axis.
- the internal housing 6 extends in the tangential direction T.
- the tangential direction T corresponds to the circumferential direction of the turbine ring.
- a holder member 10 made of metal material is present in the internal housing 6 .
- the holder member 10 may be made from a superalloy, e.g. the “AM1” superalloy.
- the holder member 10 comprises a body 11 from which holder elements 12 extend in the tangential direction on both sides of the body 11 , which holder elements 12 are made of metal material and come to bear against the wall 5 .
- the body 11 does not bear against the wall 5 defining the internal housing 6 .
- the holder member 10 bears against the wall 5 solely via the holder elements 12 .
- the holder elements 12 alone exert sufficient pressure against the wall 5 to hold the ring sector 1 .
- the holder elements 12 are in the form of tabs.
- the wall 5 is provided with grooves 8 for co-operating with the holder tabs 12 .
- the wall is not provided with such grooves.
- a first set of tabs 12 bears against the wall 5 beside the first end 6 1 of the internal housing 6
- a second set of tabs 12 bears against the wall 5 beside the second end 6 2 of the internal housing 6 .
- the holder member 10 is connected firstly to the casing 14 and secondly to the ring sector 1 by the holder elements 12 bearing against the wall 5 defining the internal housing 6 .
- the holder elements 12 exert pressure on the ring sector 1 both along the radial direction R and along the axial direction A.
- the axial direction A corresponds to the direction along the axis of revolution of the turbine ring and to the flow direction of the gas stream in the passage. More precisely, in the example shown, a first subset of the holder elements 12 apply outward radial pressure (away from the passage), and a second subset of the holder elements 12 apply inward radial pressure (towards the passage). In the example shown, there are as many holder elements 12 applying outward radial pressure as there are holder elements 12 applying inward radial pressure.
- a third subset of the holder elements 12 apply axial pressure in the upstream direction and a fourth subset of the holder elements 12 apply axial pressure in the downstream direction.
- upstream and downstream are used herein with reference to the flow direction of the gas stream through the turbine (see arrow F in FIG. 4 ).
- the holder member 10 provides eight bearing points against the wall 5 of the ring sector 1 : two bearing points where outward radial pressure is applied; two bearing points where inward radial pressure is applied; two bearing points where upstream axial pressure is applied; and two bearing points where downstream axial pressure is applied.
- the holder elements 12 bear against a plurality of distinct faces of the wall 5 defining the internal housing 6 .
- FIGS. 1 to 3 show the situation in which the internal housing 6 is a through housing, but the invention is not limited to this situation, it being possible in variants that are not shown for the internal housing to be in the form of a blind hole, for example.
- the internal housing 6 is accessible from the outside of the ring sector 1 at least via a through recess 9 situated in the wall 5 so as to connect the holder member 10 to the casing 14 , as shown diagrammatically in FIG. 3 .
- the casing 14 has a plurality of fastener elements 15 in the form of attachment tabs extending radially through the recesses 9 towards a flow passage for the gas stream.
- the attachment tabs 15 of the casing 14 grip the body 11 of the holder member 10 in order to fasten it to the casing 14 .
- Each attachment tab 15 presents a zone 15 a situated facing the body 11 of the holder member and an outer radial end 15 b situated beside the casing 14 .
- the holder member 10 is initially inserted in the internal housing 6 .
- the holder member 10 inserted in the internal housing 6 is lightly prestressed at ambient temperature (i.e. a temperature of 20° C.).
- the assembly constituted by the ring sector 1 and the holder member 10 received in the ring sector 1 is assembled with the casing 14 by causing the body 11 of the holder member 10 to be gripped by the attachment tabs 15 of the casing 14 . It would not go beyond the ambit of the invention for the body to be fastened to the casing in a manner other than by gripping, e.g. by screw fastening.
- the attachment tabs 15 of the casing 14 are housed in part in the housing 6 (i.e. only a portion of the length of the attachment tabs 15 is housed in the housing 6 ).
- the recess 9 also constitutes a ventilation orifice enabling cooling air to be brought to the holder member 10 and to the ring sector 1 .
- the holder member 10 and portions of the attachment tabs 15 are housed in the housing 6 of the CMC ring sector 1 advantageously makes it possible to protect these elements from the heat of the gas stream flowing in the passage since the ring sector 1 withstands heat and forms a thermal barrier. Furthermore, the presence of the differential expansion phenomenon serves advantageously to hold the ring sector axially and radially in position as a result of the pressure exerted by the holder member 10 thereagainst while in operation.
- the tabs 12 bear against the wall 5 over a length
- p is also greater than the length
- the tabs 12 bear against the wall 5 via their distal ends 12 a situated remote from the body 11 .
- the holder member 10 extends over a length
- the holder member 10 extends from the first end 6 1 to the second end 6 2 of the internal housing 6 . As shown in FIG.
- the tabs 12 bear against the wall 5 via holder zones Z that are symmetrical relative to the tangential direction T.
- the holder member 10 thus has at least one first holder element 12 bearing against the wall 5 via a first holder zone Z and at least one second holder element 12 bearing against the wall 5 via a second holder zone Z that is symmetrical to the first holder zone relative to the tangential direction T (or relative to the longitudinal axis of the housing 6 ).
- the first and second holder zones are offset radially or axially.
- the first and second holder zones may each form part of a distinct base of the wall 5 .
- the holder zones Z extend over a portion only of the inside circumference of the wall 5 . In the example shown, the tabs 12 bear flat against the wall 5 .
- Each above-described ring sector 1 is made of CMC by forming a fiber preform of shape similar to that of the ring sector and by densifying the ring sector with a ceramic matrix.
- the fiber preform is advantageously made by three-dimensional weaving or by multilayer weaving.
- the weaving may be of the interlock type.
- Other three-dimensional or multilayer weaves may be used, e.g. such as multi-plain or multi-satin weaves.
- the resulting fiber blank is shaped in order to obtain a ring sector preform, which is subsequently consolidated and densified with a ceramic matrix, it being possible for densification to be performed in particular by means of a chemical vapor infiltration (CVI) method, as is well known.
- CVI chemical vapor infiltration
- FIG. 4 is a fragmentary diagrammatic view in section perpendicular to the tangential direction showing the ring sector 1 of FIG. 2 once assembled with the ring support structure 14 .
- FIG. 4 shows the means used for providing axial sealing, and for reasons of simplicity, the holder member 10 and the attachment tabs 15 are not shown.
- the layer of abradable material 4 covering the inside face 3 of the annular base 2 is shown in FIG. 4 .
- the layer of abradable material 4 is situated facing a set of rotary blades P.
- the arrow F shows the flow direction of the gas stream through the turbine. The gas stream flows along the axial direction A of the high pressure nozzle D towards the low pressure nozzle (not shown).
- annular sealing gasket 20 is present on the outside face 3 a of the annular base 2 of the turbine ring sector 1 beside the high pressure nozzle D.
- the ring sector 1 is also gripped via the wall 5 by sealing tabs 21 of the casing 14 .
- the gasket 20 and the tabs 21 prevent an axially-directed gas stream from flowing between the ring sector 1 and the casing 14 .
- FIGS. 5 and 6 show a variant embodiment in which a holder member 10 ′ made of metal material is present in the internal housing 6 .
- the layer of abradable material 4 covering the inside face 3 of the annular base 2 is shown in FIGS. 5 and 6 .
- the holder member 10 ′ is connected to the ring support structure in the same manner as that described with reference to FIG. 3 .
- the holder member 10 ′ comprises a body 11 ′ from which elastically deformable holder elements 12 ′ extend in the tangential direction T on either side of the body 11 ′, which holder elements 12 ′ come to bear against the wall 5 defining the internal housing 6 .
- the holder elements 12 ′ are in the form of flared portions extending from the body 11 towards the ends of the internal housing 6 .
- the flared portions 12 ′ become wider over a portion of their length on going from the body 11 ′ towards one of the ends 6 2 or 6 2 of the internal housing 6 .
- the flared portions 12 ′ present bearing portions 13 ′ that are situated in the example shown at their distal ends 12 ′ a .
- the bearing portions 13 ′ bear against the wall 5 in order to hold the ring sector 1 to the ring support structure.
- the flared portions 12 ′ bear against the wall 5 defining the internal housing 6 at their distal ends 12 ′ a .
- the flared portions 12 ′ in this embodiment extend over a length
- the bearing portions 13 ′ of the flared portions 12 ′ are present at the ends 6 2 and 6 2 of the internal housing 6 .
- the internal housing 6 presents corners C with the bearing portions 13 ′ coming to bear against the corners C of the internal housing 6 .
- the bearing portions 13 ′ of the flared portions 12 ′ are not in contact with one another, but it would not go beyond the ambit of the invention if they were. As in the example of FIGS.
- each flared portion 12 ′ bear against the wall 5 via holder zones Z that are symmetrical relative to the longitudinal axis of the internal housing 6 .
- each flared portion presents a single bearing portion coming to bear over some or all of the inside circumference of the wall.
- the holder member 10 is inserted into the internal housing 6 in such a manner as to position its bearing portions 13 ′ at the first and second ends 6 1 and 6 2 of the internal housing 6 .
- the holder member 10 ′ inserted in the internal housing 6 is lightly prestressed at ambient temperature.
- the assembly constituted by the holder member 10 ′ and the ring sector 1 is then fastened to the attachment tabs of the casing in the same manner as in FIG. 3 .
- an internal housing of shape that is rectangular when observed in section perpendicularly to its longitudinal axis. It would not go beyond the ambit of the invention for the internal housing to present some other shape, such as a shape that is square or circular when observed in section perpendicularly to its longitudinal axis.
Abstract
Description
Claims (10)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1552372 | 2015-03-23 | ||
FR1552372A FR3034132B1 (en) | 2015-03-23 | 2015-03-23 | TURBINE RING ASSEMBLY COMPRISING A PLURALITY OF RING SECTIONS IN CERAMIC MATRIX COMPOSITE MATERIAL |
PCT/FR2016/050627 WO2016151233A1 (en) | 2015-03-23 | 2016-03-22 | Turbine ring assembly comprising a plurality of ceramic matrix composite ring segments |
Publications (2)
Publication Number | Publication Date |
---|---|
US20180080344A1 US20180080344A1 (en) | 2018-03-22 |
US10718235B2 true US10718235B2 (en) | 2020-07-21 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/560,754 Active 2037-01-01 US10718235B2 (en) | 2015-03-23 | 2016-03-22 | Turbine ring assembly comprising a plurality of ring sectors made of ceramic matrix composite material |
Country Status (7)
Country | Link |
---|---|
US (1) | US10718235B2 (en) |
EP (1) | EP3274565B1 (en) |
CN (1) | CN107532483B (en) |
CA (1) | CA2979791C (en) |
FR (1) | FR3034132B1 (en) |
RU (1) | RU2703896C2 (en) |
WO (1) | WO2016151233A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9863265B2 (en) * | 2015-04-15 | 2018-01-09 | General Electric Company | Shroud assembly and shroud for gas turbine engine |
FR3056632B1 (en) * | 2016-09-27 | 2020-06-05 | Safran Aircraft Engines | TURBINE RING ASSEMBLY INCLUDING A COOLING AIR DISTRIBUTION ELEMENT |
FR3065481B1 (en) * | 2017-04-19 | 2020-07-17 | Safran Aircraft Engines | TURBINE ASSEMBLY, PARTICULARLY FOR A TURBOMACHINE |
US10934877B2 (en) | 2018-10-31 | 2021-03-02 | Raytheon Technologies Corporation | CMC laminate pocket BOAS with axial attachment scheme |
US11008894B2 (en) | 2018-10-31 | 2021-05-18 | Raytheon Technologies Corporation | BOAS spring clip |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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US6733233B2 (en) * | 2002-04-26 | 2004-05-11 | Pratt & Whitney Canada Corp. | Attachment of a ceramic shroud in a metal housing |
US6758653B2 (en) * | 2002-09-09 | 2004-07-06 | Siemens Westinghouse Power Corporation | Ceramic matrix composite component for a gas turbine engine |
WO2006136755A2 (en) | 2005-06-24 | 2006-12-28 | Snecma | Reinforcing fibrous structure for a composite material and a part containing said structure |
US20120027572A1 (en) | 2009-03-09 | 2012-02-02 | Snecma Propulsion Solide, Le Haillan | Turbine ring assembly |
US20120171027A1 (en) | 2010-12-30 | 2012-07-05 | General Electric Company | Structural low-ductility turbine shroud apparatus |
EP2631434A2 (en) | 2012-02-22 | 2013-08-28 | General Electric Company | Low-ductility turbine shroud |
EP2960440A1 (en) | 2014-06-27 | 2015-12-30 | Rolls-Royce Corporation | Segmented turbine shroud and method of making a turbine shroud |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5197853A (en) * | 1991-08-28 | 1993-03-30 | General Electric Company | Airtight shroud support rail and method for assembling in turbine engine |
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2015
- 2015-03-23 FR FR1552372A patent/FR3034132B1/en not_active Expired - Fee Related
-
2016
- 2016-03-22 WO PCT/FR2016/050627 patent/WO2016151233A1/en active Application Filing
- 2016-03-22 US US15/560,754 patent/US10718235B2/en active Active
- 2016-03-22 CA CA2979791A patent/CA2979791C/en active Active
- 2016-03-22 CN CN201680019173.5A patent/CN107532483B/en active Active
- 2016-03-22 EP EP16714491.4A patent/EP3274565B1/en active Active
- 2016-03-22 RU RU2017135500A patent/RU2703896C2/en active
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Also Published As
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BR112017020246A2 (en) | 2018-05-22 |
RU2017135500A3 (en) | 2019-08-29 |
CA2979791C (en) | 2023-08-22 |
FR3034132A1 (en) | 2016-09-30 |
RU2017135500A (en) | 2019-04-08 |
RU2703896C2 (en) | 2019-10-22 |
EP3274565B1 (en) | 2021-09-22 |
WO2016151233A1 (en) | 2016-09-29 |
US20180080344A1 (en) | 2018-03-22 |
EP3274565A1 (en) | 2018-01-31 |
CN107532483B (en) | 2020-04-14 |
CN107532483A (en) | 2018-01-02 |
CA2979791A1 (en) | 2016-09-29 |
FR3034132B1 (en) | 2018-06-15 |
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